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Berdasarkan Gambar 13 terlihat bahwa terdapat sedikit perbedaan (± 1,7m) antara alinyemen
horisontal loop ramp dengan metode SCS dan CCR.
Selanjutnya juga dilakukan perbandingan alinyemen vertikal loop ramp dengan bantuan software
3DHV sebagaimana terlihat pada Gambar 14.
Gambar 14. Perbandingan Alinyemen Vertikal Centerline Loop Ramp Antara Metode Compound Curve Radii
dengan Metode Simple Curve Radius with Spiral Transition Curve
KESIMPULAN
Dari hasil visualisasi secara dua dimensi maupun visualisasi secara tiga dimensi tidak terlihat
perbedaan signifikan antara metode Compound Curve Radii dengan metode Simple Curve Radius
With Spiral Transition Curve, sehingga disimpulkan bahwa metode Compound Curve Radii dapat
dipergunakan sebagai alternatif dalam desain geometri loop ramp sesuai dengan spesifikasi
perencanaan Interchange yang mengacu pada Standard Specifications for Geometric Design of
Urban Roads 1992.
DAFTAR PUSTAKA
• Bonneson J., Zimmerman, K., and Jacobson, M. (2003). “Review And Evaluation Of
Interchange Ramp Design Considerations For Facilities Without Frontage Roads”. Texas
Transportation Institute, The Texas A&M University System, College Station, Texas.
http://tti.tamu.edu/documents/0-4538-1.pdf
• Bonneson J., Zimmerman, K., and Jacobson, M. (2004). “Development Of Ramp Design
Procedures For Facilities Without Frontage Roads”. Texas Transportation Institute, The Texas
A&M University System, College Station, Texas. http://tti.tamu.edu/documents/0-4538-2.pdf
• Department of Transportation Federal Highway Administration (2002). “Traffic Interchages
Design Manual”, Chapter 940, United State.http://tmcpfs.ops.fhwa.dot.gov/cfprojects/
uploaded_files/WSDOT%20Interchanges.pdf
• Directorate General of Highway Ministry of Public Works, (1992). “Standard Specifications
for Geometric Design of Urban Roads”, Jakarta.
• IGrds Concepts Manual. “Appendix M - Ramp Design And Roadway Design Tools”,
http://www.extranet.vdot.state.va.us/locdes/IGrdsManuals/Concept/APP_M.pdf
• Setiawan, R. (2000). “Handout Matakuliah Rekayasa Geometrik Jalan”, Jurusan Teknik
Sipil, Universitas Kristen Petra, Surabaya.
• Setiawan, R. (2005). “Program Visualisasi Alinyemen Jalan Secara Tiga Dimensi
Berdasarkan Perhitungan Alinyemen Horisontal Dan Alinyemen Vertikal”. Prosiding
Simposium Forum Studi Transportasi Antar Perguruan Tinggi (FSTPT) IX, Universitas
Sriwijaya, Palembang.
• Shahani, P.B. (1975). “Road Techniques”, Khanna Publishers, Delhi.
• Sukirman, S. (1999). “Dasar-dasar Perencanaan Geometrik Jalan”, Nova, Bandung.
• Underwood, R.T. (1991). “The Geometric Design of Roads”, Macmilan Company,
Melbourne.
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